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Cornerstone · Grades 3–5 Keystones #1 15 April 2020 Skills week 1 of 7
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Five GCSE retrieval questions · 15 April 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄6 + 2⁄6

    Answer: 2⁄3
  2. 2. Algebra Two-step equations

    Solve: 8x - 9 = 103

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 8cm

    Answer: 8.94cm
  4. 4. Ratio Sharing in a ratio

    Divide 78 in the ratio 3:2:1

    Answer: 39, 26 and 13
  5. 5. Statistics Mean

    Find the mean of: 14, 2, 4

    Answer: 6.6666666666667

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